Developer Associate (Page 42)

A company has an application that uses AWS CodePipeline to automate its continuous integration and continuous delivery (CI/CD) workflow.The application uses AWS CodeCommit for version control.A developer who was working on one of the tasks did not pull the most recent changes from the main branch.A week later, the developer noticed merge conflicts.How can the developer resolve the merge conflicts in the developer’s branch with the LEAST development effort?Read More →

A developer is designing a serverless application for a game in which users register and log in through a web browser.The application makes requests on behalf of users to a set of AWS Lambda functions that run behind an Amazon API Gateway HTTP API.The developer needs to implement a solution to register and log in users on the application’s sign-in page.The solution must minimize operational overhead and must minimize ongoing management of user identities.Which solution will meet these requirements?Read More →

A company is building a serverless application on AWS.The application uses an AWS Lambda function to process customer orders 24 hours a day, 7 days a week.The Lambda function calls an external vendor’s HTTP API to process payments.During load tests, a developer discovers that the external vendor payment processing API occasionally times out and returns errors.The company expects that some payment processing API calls will return errors.The company wants the support team to receive notifications in near real time only when the payment processing external API error rate exceed 5% of the total number of transactions in an hour.Developers need to use an existing Amazon Simple Notification Service (Amazon SNS) topic that is configured to notify the support team.Which solution will meet these requirements?Read More →

A developer needs to use Amazon DynamoDB to store customer orders.The developer’s company requires all customer data to be encrypted at rest with a key that the company generates.What should the developer do to meet these requirements?Read More →

A developer has written an AWS Lambda function.The function is CPU-bound.The developer wants to ensure that the function returns responses quickly.How can the developer improve the function’s performance?Read More →

A developer is implementing user authentication and authorization for a web application that is hosted on an Amazon EC2 instance.The developer needs to ensure that the user credentials are encrypted and secure when they are stored and transmitted.Which solution will meet these requirements?Read More →

A company has an application that uses Amazon Cognito user pools as an identity provider.The company must secure access to user records.The company has set up multi-factor authentication (MFA).The company also wants to send a login activity notification by email every time a user logs in.What is the MOST operationally efficient solution that meets this requirement?Read More →

A company has a serverless application that uses AWS Lambda functions and AWS Systems Manager parameters to store configuration data.The company moves the Lambda functions inside the VPC and into private subnets.The Lambda functions are now producing errors in their attempts to access Systems Manager parameters.Which solution will allow the Lambda functions to access Systems Manager parameters inside the VPC?Read More →

A company has a multi-node Windows legacy application that runs on premises.The application uses a network shared folder as a centralized configuration repository to store configuration files in .xml format.The company is migrating the application to Amazon EC2 instances.As part of the migration to AWS, a developer must identify a solution that provides high availability for the repository.Which solution will meet this requirement MOST cost-effectively?Read More →

A developer needs to modify an application architecture to meet new functional requirements.Application data is stored in Amazon DynamoDB and processed for analysis in a nightly batch.The system analysts do not want to wait until the next day to view the processed data and have asked to have it available in near-real time.Which application architecture pattern would enable the data to be processed as it is received?Read More →